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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series. |
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06-12-2017, 11:45 AM | #1 |
Leaky Injector
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T25 housing/wheel upgrade options
Picked up a t25 and did a little googling to see if compressor wheels and housings could be swapped to make the efficiency of a t25 more suited for the KA's VE. From what I've read, it's a turd past 5k and over 10 psi.
I searched Zilvia but didn't find an exact match on the info I'm looking for. If there is a more specific way to find relevant threads lmk. |
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06-12-2017, 12:29 PM | #2 |
Post Whore!
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most of the time this kind of stuff are trade secrets. there isn't much for you to find on the net unless you talk to a person and know them who builds turbos for a living. you can ask these guys "kinuguwa"
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06-12-2017, 02:35 PM | #3 |
Post Whore!
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IIRC, there was a guy on here or another forum who did a t25/t28 hybrid and it achieved a higher bandwidth. He went into full detail and dynoed it but I can't find it.
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06-12-2017, 08:56 PM | #5 |
Post Whore!
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The upgrade has been around forever, but it's a two step process
1: Sell working T25 so some SR boob 2: Use money to buy a used T28/GT28R/GT28RS, and the stuff to install it
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06-15-2017, 08:47 AM | #6 | |
Nissanaholic!
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Quote:
Both turbine and compressor wheels and housings are too small for that displacement and that also goes for oem T28s. They will choke / overspin like crazy, just watch their compressor map and match it against the corrected airflow of the KA. I'd say a GT28RS or even better a gt2871r A/R .84 would be somewhat well matched. |
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06-15-2017, 03:19 PM | #7 |
Nissanaholic!
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I know people with T28s running full e85 and a good tune on -1820 psi external wastegate on mani etc running strong, thats something i eventually plan on trying it sounds like a real fun setup
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06-16-2017, 12:01 PM | #8 | |
Leaky Injector
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Quote:
Otherwise, GT2871r would also be my suggestion...
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06-16-2017, 01:36 PM | #9 | |
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